[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 25 19:19:07 UTC 2011


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 26 Nov, 2011

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              383171
    Prefixes after maximum aggregation:                          167108
    Deaggregation factor:                                          2.29
    Unique aggregates announced to Internet:                     188188
Total ASes present in the Internet Routing Table:                 39373
    Prefixes per ASN:                                              9.73
Origin-only ASes present in the Internet Routing Table:           32422
Origin ASes announcing only one prefix:                           15459
Transit ASes present in the Internet Routing Table:                5298
Transit-only ASes present in the Internet Routing Table:            137
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              1776
    Unregistered ASNs in the Routing Table:                         904
Number of 32-bit ASNs allocated by the RIRs:                       1995
Number of 32-bit ASNs visible in the Routing Table:                1653
Prefixes from 32-bit ASNs in the Routing Table:                    3905
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:             85
Number of addresses announced to Internet:                   2493814272
    Equivalent to 148 /8s, 164 /16s and 150 /24s
    Percentage of available address space announced:               67.3
    Percentage of allocated address space announced:               67.3
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.6
Total number of prefixes smaller than registry allocations:      161781

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                    95482
    Total APNIC prefixes after maximum aggregation:               31239
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           91934
    Unique aggregates announced from the APNIC address blocks:    38658
APNIC Region origin ASes present in the Internet Routing Table:    4601
    APNIC Prefixes per ASN:                                       19.98
APNIC Region origin ASes announcing only one prefix:               1253
APNIC Region transit ASes present in the Internet Routing Table:    713
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    109
Number of APNIC addresses announced to Internet:              630811232
    Equivalent to 37 /8s, 153 /16s and 106 /24s
    Percentage of available APNIC address space announced:         80.0

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 175/8, 180/8,
                       182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
                       219/8, 220/8, 221/8, 222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    145956
    Total ARIN prefixes after maximum aggregation:                74537
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118222
    Unique aggregates announced from the ARIN address blocks:     48634
ARIN Region origin ASes present in the Internet Routing Table:    14758
    ARIN Prefixes per ASN:                                         8.01
ARIN Region origin ASes announcing only one prefix:                5635
ARIN Region transit ASes present in the Internet Routing Table:    1565
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:      12
Number of ARIN addresses announced to Internet:               803548096
    Equivalent to 47 /8s, 229 /16s and 43 /24s
    Percentage of available ARIN address space announced:          63.9

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  45/8,  47/8,  48/8,  50/8,  52/8,
                        53/8,  54/8,  55/8,  56/8,  57/8,  63/8,  64/8,
                        65/8,  66/8,  67/8,  68/8,  69/8,  70/8,  71/8,
                        72/8,  73/8,  74/8,  75/8,  76/8,  96/8,  97/8,
                        98/8,  99/8, 100/8, 104/8, 107/8, 108/8, 173/8,
                       174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
                       208/8, 209/8, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     92793
    Total RIPE prefixes after maximum aggregation:                51275
    RIPE Deaggregation factor:                                     1.81
Prefixes being announced from the RIPE address blocks:            84982
    Unique aggregates announced from the RIPE address blocks:     54491
RIPE Region origin ASes present in the Internet Routing Table:    16128
    RIPE Prefixes per ASN:                                         5.27
RIPE Region origin ASes announcing only one prefix:                7973
RIPE Region transit ASes present in the Internet Routing Table:    2549
Average RIPE Region AS path length visible:                         4.8
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1151
Number of RIPE addresses announced to Internet:               492677440
    Equivalent to 29 /8s, 93 /16s and 169 /24s
    Percentage of available RIPE address space announced:          79.4

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       196608-198655
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   36535
    Total LACNIC prefixes after maximum aggregation:               7956
    LACNIC Deaggregation factor:                                   4.59
Prefixes being announced from the LACNIC address blocks:          35946
    Unique aggregates announced from the LACNIC address blocks:   18739
LACNIC Region origin ASes present in the Internet Routing Table:   1554
    LACNIC Prefixes per ASN:                                      23.13
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   285
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   377
Number of LACNIC addresses announced to Internet:              93623936
    Equivalent to 5 /8s, 148 /16s and 150 /24s
    Percentage of available LACNIC address space announced:        62.0

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   8328
    Total AfriNIC prefixes after maximum aggregation:              2027
    AfriNIC Deaggregation factor:                                  4.11
Prefixes being announced from the AfriNIC address blocks:          6387
    Unique aggregates announced from the AfriNIC address blocks:   2014
AfriNIC Region origin ASes present in the Internet Routing Table:   499
    AfriNIC Prefixes per ASN:                                     12.80
AfriNIC Region origin ASes announcing only one prefix:              156
AfriNIC Region transit ASes present in the Internet Routing Table:  107
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             27874816
    Equivalent to 1 /8s, 169 /16s and 86 /24s
    Percentage of available AfriNIC address space announced:       41.5

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2516      11105         973   Korea Telecom (KIX)
17974     1636        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1626        303          86   TPG Internet Pty Ltd
 4755     1513        376         168   TATA Communications formerly 
 7552     1384       1064           7   Vietel Corporation
 9829     1166        989          28   BSNL National Internet Backbo
 9583     1095         80         494   Sify Limited
 4808     1081       2072         311   CNCGROUP IP network: China169
24560      966        343         218   Bharti Airtel Ltd., Telemedia
18101      953        119         149   Reliance Infocom Ltd Internet

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3479       3814         217   bellsouth.net, inc. 
 7029     2909       1016         199   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1849        680         121   PaeTec Communications, Inc.
 4323     1613       1078         389   Time Warner Telecom
20115     1600       1546         624   Charter Communications 
22773     1502       2909         104   Cox Communications, Inc.
30036     1440        258         676   Mediacom Communications Corp 
19262     1387       4683         401   Verizon Global Networks 
 7018     1314       7030         860   AT&T WorldNet Services

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8402     1587        480          15   Corbina telecom
 6830      651       1927         412   UPC Distribution Services
34984      612        114         193   BILISIM TELEKOM
20940      557        186         439   Akamai Technologies European 
 3320      512       8168         389   Deutsche Telekom AG
12479      498        603          18   Uni2 Autonomous System
 3292      478       2106         406   TDC Tele Danmark
 8866      463        133          26   Bulgarian Telecommunication C
 8551      416        366          45   Bezeq International
31148      412         22         116   FreeNet ISP

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
10620     1700        315         179   TVCABLE BOGOTA 
28573     1515       1045          71   NET Servicos de Comunicao S.A
 8151     1448       2973         342   UniNet S.A. de C.V. 
 7303     1238        751         173   Telecom Argentina Stet-France
27947      609         72          86   Telconet S.A
22047      581        322          17   VTR PUNTO NET S.A. 
 6503      553        434          68   AVANTEL, S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 3816      545        236          87   Empresa Nacional de Telecomun
11172      528         85          95   Servicios Alestra S.A de C.V 

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452      897        446          12   TEDATA
24863      781        146          36   LINKdotNET AS number
 3741      281        939         230   The Internet Solution 
15706      242         32           6   Sudatel Internet Exchange Aut
33776      240         13           8   Starcomms Nigeria Limited
 6713      235        519          14   Itissalat Al-MAGHRIB
29571      218         17          13   Ci Telecom Autonomous system 
12258      196         28          57   Vodacom Internet Company 
24835      192         80           8   RAYA Telecom - Egypt
16637      157        664          83   MTN Network Solutions

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3479       3814         217   bellsouth.net, inc. 
 7029     2909       1016         199   Windstream Communications Inc
 4766     2516      11105         973   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1849        680         121   PaeTec Communications, Inc.
10620     1700        315         179   TVCABLE BOGOTA 
17974     1636        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1626        303          86   TPG Internet Pty Ltd
 4323     1613       1078         389   Time Warner Telecom
20115     1600       1546         624   Charter Communications 

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 7029      2909        2710      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1849        1728      PaeTec Communications, Inc.
17974      1636        1600      PT TELEKOMUNIKASI INDONESIA
 8402      1587        1572      Corbina telecom
 4766      2516        1543      Korea Telecom (KIX)
 7545      1626        1540      TPG Internet Pty Ltd
10620      1700        1521      TVCABLE BOGOTA 
28573      1515        1444      NET Servicos de Comunicao S.A
22773      1502        1398      Cox Communications, Inc.

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
41.222.79.0/24       37345     MEDALLION Communications
41.223.92.0/22       36936     >>UNKNOWN<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:19       /9:12      /10:27      /11:81      /12:236     
/13:465     /14:809     /15:1434    /16:12028   /17:6089    /18:10141   
/19:20013   /20:27720   /21:27902   /22:38036   /23:35600   /24:199083  
/25:1163    /26:1365    /27:775     /28:165     /29:3       /30:0       
/31:0       /32:5       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

  ASN   No of nets  Total ann.   Description
 7029     2538          2909      Windstream Communications Inc
 6389     2123          3479      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1595          1700      TVCABLE BOGOTA 
 8402     1562          1587      Corbina telecom
30036     1400          1440      Mediacom Communications Corp 
11492     1118          1155      Cable One 
 1785     1058          1849      PaeTec Communications, Inc.
 7011     1050          1167      Citizens Utilities 
22773      962          1502      Cox Communications, Inc.

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:421       2:487       4:15        5:1         6:3         8:358    
  12:1952     13:1        14:555      15:11       16:3        17:7      
  20:9        23:68       24:1694     27:1036     31:684      32:66     
  33:2        34:2        36:4        38:767      39:1        40:109    
  41:2868     42:64       43:1        44:3        46:1098     47:3      
  49:296      50:450      52:13       55:6        56:2        57:49     
  58:928      59:486      60:360      61:1167     62:916      63:1966   
  64:4080     65:2309     66:4345     67:2011     68:1172     69:3148   
  70:904      71:359      72:1814     74:2650     75:430      76:320    
  77:897      78:891      79:461      80:1145     81:839      82:523    
  83:520      84:471      85:1149     86:401      87:908      88:353    
  89:1596     90:246      91:4287     92:537      93:1438     94:1322   
  95:1126     96:396      97:285      98:771      99:37      101:247    
 103:513     106:7       107:97      108:86      109:1201    110:679    
 111:812     112:363     113:503     114:630     115:714     116:907    
 117:722     118:876     119:1289    120:353     121:669     122:1562   
 123:1027    124:1357    125:1354    128:269     129:184     130:174    
 131:633     132:155     133:21      134:224     135:54      136:212    
 137:145     138:285     139:122     140:494     141:250     142:379    
 143:400     144:498     145:66      146:476     147:220     148:641    
 149:275     150:163     151:191     152:449     153:172     154:7      
 155:379     156:208     157:360     158:156     159:488     160:333    
 161:215     162:365     163:175     164:518     165:381     166:540    
 167:448     168:828     169:145     170:826     171:87      172:4      
 173:1752    174:581     175:435     176:332     177:403     178:1127   
 180:1174    181:39      182:664     183:247     184:394     185:1      
 186:1464    187:783     188:994     189:1160    190:5222    192:5933   
 193:5057    194:3540    195:3112    196:1277    197:170     198:3614   
 199:4227    200:5527    201:1701    202:8557    203:8523    204:4308   
 205:2410    206:2655    207:2837    208:4024    209:3583    210:2741   
 211:1471    212:2012    213:1803    214:784     215:91      216:4921   
 217:1478    218:575     219:341     220:1253    221:523     222:327    
 223:280    

End of report



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